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Frequently Asked Questions

Our engineering and induction heating experts have compiled a list of frequently asked questions. This list will be updated often. Ask your own questions. We are happy to help.

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Home Frequently Asked Questions

Glossary: Terms & Definitions

How does induction heating work?

During induction heating eddy currents are induced in an electrically conductive metallic workpiece by an alternating electromagnetic field.  These are converted into heat by magnetic loss. Or, simply put, the metal heats up due to the current flow produced in the workpiece. This enables induction heating to introduce heat directly into the workpiece rather than through connectivity from an external source such as heating with a flame or in a furnace.

This process thus achieves a very high degree of efficiency. Additionally, heating can also be accomplished passing through non-conductive materials. The surrounding area is only heated indirectly.

What is the difference between induction brazing and welding?

Brazing is a process in which a filler metal is melted and flowed into a joint to join two or more metal items at a high temperature.

Brazing differs from welding in that brazing does not involve melting of the pieces being connected. Brazing differs from soldering in that soldering is performed at a lower temperature.

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What is the difference between dual frequency and simultaneous dual frequency power supplies?

Both types of generators allow operators to use more than one frequency range with a single system.  Operators can switch between to ranges of frequencies — medium and high, for example – on a dual system, but they cannot use both ranges of frequencies at the same time.

Simultaneous dual frequency  systems allow use of both ranges at the same time.  This ability is especially helpful when hardening gears. Explore further details about all of the type of induction power supplies, their frequency ranges and typical uses.

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Can you explain the different types of induction coils and how they are used?

An inductor’s shape and construction style are determined predominantly by the geometry of the workpiece section to be heated, and the possibilities are infinite. See our guide to basic types of inductors and possible uses.

Products & Services

My induction generator quit working and is in for repair.  Is there any way to prevent this from happening again?

Yes, our Services Manager shared simple steps to prevent common induction generator problems.

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Do you offer installation, commissioning and training on your equipment?

Yes, our service department offers installation and commissioning help, as well as training at eldec LLC’s facility in Auburn Hills, MI or at your facility upon request. Discover about our installation, commissioning and training options.

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Do you offer customized equipment?

Yes, we would be happy to sit with you and discuss your project’s specific requirements and help you with a custom induction heating system designed to meet your specific need.

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What types of induction heating generators does eldec LLC manufacture?

eldec LLC manufactures several categories of induction heating power supplies for a wide variety of processes and applications, including induction brazing, shrink fitting, annealing, pre-heating for welding, adhesive curing and more.

While it is best to consult with one of our induction heating experts in order to customize a system for your specific process and part, discover a list of our main categories and the potential uses for each type to use as a guide.

About induction heating generators

Where are eldec LLC’s induction power supplies made?

eldec LLC custom manufactures and services induction power supplies and heating coils for the North American market in Auburn Hills, Michigan.

Does eldec LLC offer process development?

Yes, we do. We work with you to develop a customized solution through a mutually beneficial partnership.

Processes are developed using your parts to ensure results meet or exceed your process expectations. You will benefit from our years of experience with induction heating in various applications ranging from brazing and shrink fitting to curing and annealing.

About process development

Do you make induction coils in-house?

Yes, we have very talented coil makers that will carefully build your induction coils per the design requirements. We also have a talented and experienced engineering staff that will design your coil in SolidWorks.

About custom manufactured coils

My shop has gone through a lot of coils last year.  Do you have any suggestions to help make them last longer?

Yes, a little TLC can go a long way in helping extend the life of your coils.  Our Service Manager shared top tips to help avoid induction coil problems.

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Can you repair induction heating coils and what will it cost?

Yes, if you would send us your coils we would be more than happy to do a physical evaluation and provide you with a quotation for the repair work. Discover our induction heating coil repair, refurbishment and maintenance services and expertise.

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Do you offer rental equipment?

Yes, eldec LLC often has stock induction heating power supplies available for rental or immediate purchase suitable for a variety of applications.

Equipment rental solutions

Can I rent a coil from you?

Unfortunately, no you cannot. All of our induction coils are customer made for a specific application being performed on a specific size part.

We would be happy to review your application and part geometry to provide you with a quotation for the purchase of an induction coil.

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My induction heating system isn’t working properly. What are my service options?

Our service department offers on-site service where we will send one of our technicians to your facility to repair eldec LLC generators. We would prefer, however, that you send your generator to our facility in Auburn Hills, MI for our technicians to examine the machine and perform any necessary repairs.

Service & technical support

Does eldec LLC stock spare parts and components for its induction heating generators?

Yes, we do. eldec LLC keeps its shelves stocked with replacement parts and components for its line of generators and induction heating systems. Many parts can be shipped within three to four business days or less to locations in the United States.

Locations in Canada and Mexico require additional shipping time.

About spare parts

I lost my induction heating operational and maintenance manual. Can I get a replacement?

Yes, replacement manuals are available.

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I’m new to my company and it’s my responsibility to maintain equipment in our shop.  Do you have recommendations for preventative maintenance for induction heating generators?

Yes, we do.  You can download a copy of our recommended maintenance schedule and detailed instructions here.

Request preventative maintenance manual

How do I know whether to repair or replace my induction coil?

Repairing rather than replacing induction coils can save you money, but how do you know when it’s time to replace them? eldec LLC’s skilled technicians can help you decide.

Contact us to schedule an evaluation

Do you have instructions for installing induction heating coils?

Yes, we do.  You can read more about the steps and download a printer-friendly copy of our coil installation tips.

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What is the best way to disconnect the coaxial cable from my eldec LLC generator?

Whether you’re the boss or the new guy or gal on the line be sure to read the maintenance and service manuals before attempting an in-house repair.

If you are unsure of the proper method to disconnect the coaxial cable from the induction generator, please consult with eldec LLC’s trained service personnel, and they will walk you through the process.

If the level of repair needed exceeds your staff’s capabilities, eldec LLC offers flexible service options and quick turn around.

Service & technical support

How do I safely change a coaxial cable?

Discover our step-by-step procedures for safe removal and installation of coaxial cables for induction power supplies.

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Do you offer operator training for induction heating systems?

Yes.  Getting a new employee up to speed can be a challenge. That’s why eldec LLC offers training for induction heating system operation for individuals and small groups.

Induction Heating Equipment Training

Quotes & Orders

What information do you need from me in order to provide a quote for a heating system?

Five key pieces of information are needed. For more information, discover our five key induction heating system quote specs.

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What is the lead time for an induction coil?

Lead times can vary and depend on how busy we are. eldec LLC has 3 recommendations to keep your operation running smoothly.

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Events & Trade Shows

Are you planning to exhibit at any upcoming tradeshows in North America?

We will post the most up-to-date information on our trade show update page.  In the meantime, we are available for consultations via phone, video conference, email and in person with some restrictions.  Give us a call or request a consultation and we’ll call you.

Our trade show schedule

Induction Heating Solutions

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